组合桥面板切应力分布规律及横向剪力钉布置  

Distribution law of shear stress of composite bridge deck and arrangement of transverse shear stud

作　　者：张连振[1] 宋谋 李玉生 樊文胜 吴红林[1] ZHANG Lianzhen;SONG Mou;LI Yusheng;FAN Wensheng;WU Honglin(School of Transportation Science and Engineering,Harbin Institute of Technology,Harbin 150090,China;Jiangxi Communications Investment Group Limited Company,Nanchang 330025,China)

机构地区：[1]哈尔滨工业大学交通科学与工程学院,黑龙江哈尔滨150090 [2]江西省交通投资集团有限公司,江西南昌330025

出　　处：《浙江大学学报（工学版）》2024年第8期1636-1646,共11页Journal of Zhejiang University：Engineering Science

基　　金：国家重点研发计划资助项目(2022YFC3801100).

摘　　要：根据组合桥面板截面的切应力、剪力流分布规律,在混凝土板和钢顶板完全连接的条件下,理论推导出混凝土板和钢顶板的剪力流承担比例,证明组合桥面板层间纵向剪力小于采用组合梁公式得到的计算值.层间完全连接和通过弹簧单元模拟剪力钉离散连接开展的有限元计算均支持这一观点,验证了组合桥面板截面的竖向剪力主要由腹板承担的观点的正确性.探究横向上剪力钉的布置方式.结果表明,组合桥面板应沿横向全宽布置剪力钉,在腹板两侧进行加密,腹板正上方不宜布设剪力钉.The shear flow bearing ratio of concrete slab and steel roof was theoretically deduced according to the distribution law of shear stress and shear flow of composite bridge deck section under the condition of complete connection between concrete slab and steel roof.It was proved that the longitudinal shear force between layers of composite bridge deck is smaller than that calculated by the formula of composite beam.The finite element calculation of complete connection between layers and discrete connection of shear studs simulated by spring element supported this view,which verified the correctness of the view that the vertical shear force of composite bridge deck section was mainly borne by the web.The arrangement of shear studs in transverse direction was explored.Results show that the shear studs should be arranged along the transverse full width of the composite bridge deck,the shear studs should be densified on both sides of the web,and the shear studs should not be arranged directly above the web.

关 键 词：组合桥面板 剪力流 层间纵向剪力 剪力钉 布置方式 

分 类 号：U448[建筑科学—桥梁与隧道工程]